[2] The nomenclature for the eEF-1 subunits have somewhat shifted around circa 2001, as it was recognized that the EF-1A and EF-1B complexes are to some extent independent of each other.
[1] Components as currently recognized and named include:[3] The precise manner eEF1B subunit attaches onto eEF1A varies by organ and species.
The presence in three diverse eukaryotic groups (fungi, chromalveolates, and archaeplastida) is supposed to be the result of two or more horizontal gene transfer events, according to a 2009 review.
If the hypothesis holds true, scientists would expect to find an organism that has a repressed EFL and a fully-functioning EF-1α.
[7] In eukaryotes, a related GTPase called eRF3 participates in translation termination.